Import Library but Download first?

[snippsat]

So when you're talking about installed, they are the ones that have been downloaded first to the PC?

There is no download for you all is done automatic,as mention with pip install pandas
Dependencies(basic that pandas need) as @buran mention is now also been taking care with command over.

To show a demo i use virtual environment,so it work as a new install.
See that basic dependencies also get installed numpy, six, python-dateutil, pytz, pandas.

# Check pip the newest is 19.0.1
λ pip -V
pip 19.0.1 from e:\div_code\panda_env\lib\site-packages\pip (python 3.7)

# Install pandas
(panda_env) E:\div_code\panda_env
λ pip install pandas
Collecting pandas
  Downloading ...
Installing collected packages: numpy, six, python-dateutil, pytz, pandas
Successfully installed numpy-1.16.1 pandas-0.24.0 python-dateutil-2.7.5 pytz-2018.9 six-1.12.0

# Test that that it work
(panda_env) E:\div_code\panda_env
λ python
Python 3.7.0 (v3.7.0:1bf9cc5093, Jun 27 2018, 04:06:47) [MSC v.1914 32 bit (Intel)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import pandas as pd
>>> pd.__version__
'0.24.0'
>>> exit()